The always fun and exciting Brick Experiment Channel tests Lego cars against longer gaps that it needs to drive over. Gradually improve the car until it turns into a capable gap crossing/bridging vehicle.
Things to consider: wheel diameter, wheel count, 8WD, wheel position, the center of mass, frame length, frame strength, moving mass, weight reduction.
What to consider when building:
– max length 1 meter
– no steering (to simplify the builds)
– only Lego parts used